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Projects of CEN/TC 187/WG 4

DIN EN ISO 14720-2 rev 2024-04-18 Testing of ceramic materials - Determination of sulfur in non-oxidic ceramic raw materials and ceramic materials - Part 2: inductively coupled plasma optical emission spectrometry (ICP-OES) or ion chromatography (IC) after burning in the oxygen flow More  Comment 
DIN EN ISO 14720-1 rev 2024-04-18 Testing of ceramic materials - Determination of sulfur in non-oxidic ceramic raw materials and ceramic materials - Part 1: Infrared measurement methods More  Comment 
DIN EN 15991 2023-07-14 Testing of ceramic raw materials and ceramic materials - Direct determination of mass fractions of impurities in powders and granules of silicon carbide by inductively coupled plasma optical emission spectrometry with electrothermal vaporisation (ETV-ICP-OES); German and English version prEN 15991:2024 More  Comment 
DIN EN 15979 2023-07-14 Testing of ceramic raw materials and ceramic materials - Direct determination of mass fractions of impurities in powders and granules of silicon carbide by optical emission spectrometry by direct current arc excitation (DCArc-OES); German and English version prEN 15979:2024 More  Comment 
DIN EN ISO 21068-4 2023-04-03 Chemical analysis of raw materials and refractory products containing silicon carbide, silicon nitride, silicon oxynitride and sialon - Part 4: XRD methods (ISO/FDIS 21068-4:2024); German version FprEN 21068-4:2024 More  Comment 
DIN EN ISO 14719 rev 2023-01-23 Chemical analysis of refractory material glass and glazes - Determination of Fe2+ and Fe3+ by the spectral photometric method with 1,10-phenanthroline More  Comment 
DIN EN ISO 21068-2 2021-11-15 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 2: Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, free and surface silica (ISO/FDIS 21068-2:2024); German version FprEN ISO 21068-2:2024 More  Comment 
DIN EN ISO 21068-3 2021-11-15 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO/FDIS 21068-3:2024); German version FprEN ISO 21068-3:2024 More  Comment 
DIN EN ISO 21068-1 2021-11-15 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon – Part 1: General information, terminology and sample preparation (ISO 21068 1:2024); German version EN ISO 21068 1:2024 More  Comment 

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